Yup, it works only with --sphix-build which obviously is how I tested it...
I will include a fix in my next pull request (I don't really have anything
planned, but something will most likely pop up).

Paolo

Il sab 31 ott 2020, 16:46 Peter Maydell <peter.maydell@linaro.org> ha
scritto:

> On Sat, 17 Oct 2020 at 15:50, Paolo Bonzini <pbonzini@redhat.com> wrote:
> > ----------------------------------------------------------------
> > * Drop ninjatool and just require ninja (Paolo)
> > * Fix docs build under msys2 (Yonggang)
> > * HAX snafu fix (Claudio)
> > * Disable signal handlers during fuzzing (Alex)
> > * Miscellaneous fixes (Bruce, Greg)
> >
> > Yonggang Luo (3):
> >       docs: Fix Sphinx configuration for msys2/mingw
> >       meson: Move the detection logic for sphinx to meson
> >       cirrus: Enable doc build on msys2/mingw
>
> I've just noticed that there seems to be a minor bug with
> the new sphinx detection logic: if the Sphinx is the
> wrong version then it prints:
>
> Program sphinx-build found: YES
> ../../docs/meson.build:30: WARNING:  exists but it is either too old
> or uses too old a Python version
>
> ie it hasn't actually managed to substitute in the
> program name, so there's just a double-space after
> WARNING: instead...
>
> thanks
> -- PMM
>
>